Ads supporting the pipeline are the work of 2 political offshoots of Zuckerberg's social welfare organization. Meanwhile, Facebook rejects an ad from protesters criticizing Zuckerberg's political leanings.
Video: To raise awareness of global hunger, the 'Live Below the Line' campaign is challenging people to see what it’s like to live on such a small budget. Hunter and Beau Biden — who are part of the campaign — join Andrea Mitchell to discuss.